A persistent criticism of analog synthesis techn;ques is that they cannot cope with the complexity of realistic industrial designs, especially system-level designs. We show how recent advances in simulation-based synthesis can be augmented, via appropriate macromodeling, to attack complex analog blocks. To support this claim, we resynthesize from scratch, in several different styles, a complex ...

A novel CMOS monolithic analog multiplier capable of operating in two quadrants is described in this thesis. The multiplier incorporates a voltage-controlled variable linear resistor comprised of two FET transistors in the feedback network of an operational amplifier. This novel approach to implementing an analog multiplier results in good linearity and wide input dynamic range when compared to...

Abstract Recently, we proposed analog single-carrier transmission with frequency-domain equalization (analog SC-FDE) in order to improve performance of analog signal transmission. Analog SC-FDE signal spectrum has a complex conjugate relation between lower sideband (LSB) and upper sideband (USB) since analog signal is real-valued. Exploiting this property, the LSB and USB subcarriers can be com...

The areas of analog circuit fault simulation and test generation have not witnessed the same degree of success as their digital counterparts. This is due mainly fo the complexity of analog behavior and the lack of a fault model. We present a new Jicnctional fault modeling technique called the perturbation fault model. The perturbation fault model is based on an estimation of the distance betwee...

In this paper, we propose a wavelet collocation method with nonlinear companding to generate behavioral models for analog circuits at the system level. During the overall process of circuit modeling, nonlinear function approximation is an important issue to accurately capture the nonideal input–output relations of analog circuit blocks. While a great number of previous research works focus on t...

A new method based on adaptive GA (genetic algorithm) and manual experience for sizing and optimizing the CMOS analog circuits is presented in this paper. In the method the simulation tool is called to produce the fitness of every circuit in a population. According to the evaluation of the fitness we can choose the better circuits. By adjusting the sizes of the transistor through GA and restric...

Quantum simulation can be implemented in pure digital or analog ways, each with their pros and cons. By taking advantage of the universality a route efficiency simulation, hybrid digital-analog approaches enrich possibilities for quantum simulation. We use unique approach to experimentally perform phase-controlled dynamics resulting from closed-contour interaction (CCI) within certain multi-lev...

Operational amplifiers are important building blocks for analog circuit design. Unfortunately, their limited performance such as bandwidth, slew-rate etc. leads the analog designer to search other possibilites and other building blocks. As a result, new current-mode active building blocks such as operational transconductance amplifiers (OTA), second generation current conveyors (CCII), current-...

Introduction: There are two types of MOS transistors, pMOS and nMOS, which are usually employed as digital switches to implement some Boolean functions. Although the MOS transistors are treated conceptually as digital devices that have logical values either “true” or “false”, they are intrinsically analog devices whose node voltage and branch current are real numbers. Thus, in order to make bes...